Federer racquet shaking

Discussion in 'Pros' Racquets and Gear' started by rpsbel, Apr 25, 2013.

  1. rpsbel

    rpsbel New User

    Joined:
    Jul 9, 2012
    Messages:
    37
    #1
  2. Relinquis

    Relinquis Hall of Fame

    Joined:
    Dec 12, 2012
    Messages:
    4,336
    Location:
    On the courts; hard & clay ...
    was pretty cool...
     
    #2
  3. PBODY99

    PBODY99 Hall of Fame

    Joined:
    Aug 17, 2005
    Messages:
    3,200
    Super slow motion, ah digital hd tv.
     
    #3
  4. volleynets

    volleynets Professional

    Joined:
    May 21, 2009
    Messages:
    1,226
    Location:
    CA
    Not a good thread title description. It is actually warping and bending that's pretty amazing!!!
     
    #4
  5. DE19702

    DE19702 Rookie

    Joined:
    Aug 17, 2006
    Messages:
    194
    Now assume you have a stiff light racquet and all that movement is twisting your wrist and elbow back and forth.
     
    #5
  6. Netspirit

    Netspirit Hall of Fame

    Joined:
    Jul 12, 2009
    Messages:
    4,228
    Location:
    Snoqualmie, WA
    That is what Alzheimer's does to older people.
     
    #6
  7. mikeespinmusic

    mikeespinmusic Rookie

    Joined:
    Jan 30, 2013
    Messages:
    165
    Parkinsons is the one that causes shaking. Alzheimer's is the forgetting one.
     
    #7
  8. mikeespinmusic

    mikeespinmusic Rookie

    Joined:
    Jan 30, 2013
    Messages:
    165
    This video is proof of how great it is to have a flexible racquet.
     
    #8
  9. rpsbel

    rpsbel New User

    Joined:
    Jul 9, 2012
    Messages:
    37
    That is the point. We think that Federer uses a 68 RDC racquet. And the vídeo shows it twisting a lot.
     
    #9
  10. thejackal

    thejackal Hall of Fame

    Joined:
    Oct 17, 2004
    Messages:
    2,885
    Location:
    Montreal, Canada
    graphite-made things do flex, which is the beauty of it. materials like steel, aluminum and titanium flex a lot less, and in a less organic (like wood) manner, which is why you won't see those metals used to performance racquets in large quantities. older sticks like the t2000 and the arthur ashe have no modern equivalents because they just didn't play that well.

    if you want to see flexing, watch what happens when hockey players take slapshots. the RA rating for hockey sticks go from 75 (extremely "whippy") to 120 (very stiff).
     
    #10
  11. Clintspin

    Clintspin Semi-Pro

    Joined:
    Jan 29, 2005
    Messages:
    776
    #11
  12. West Coast Ace

    West Coast Ace G.O.A.T.

    Joined:
    Feb 11, 2005
    Messages:
    13,310
    Location:
    So Cal
    Great post. And the AL and steel will eventually fail due to fatigue - carbon fiber, not so much.

    The hockey stick tech is incredible; those big boys really bend those new sticks.

    The tennis racquets take a lot more of the stresses - instead of sending it up your arm.
     
    #12
  13. mikeespinmusic

    mikeespinmusic Rookie

    Joined:
    Jan 30, 2013
    Messages:
    165
    I wish they'd show a video of someone using a stiff racquet. It would probably show their arm doing all the twisting and warping instead of the racquet... and then people will finally realise they should use a racquet with flex.
     
    #13
  14. rpsbel

    rpsbel New User

    Joined:
    Jul 9, 2012
    Messages:
    37
    But 68 RDC is not stiff enough?
     
    #14
  15. rafazx10

    rafazx10 Rookie

    Joined:
    Feb 9, 2012
    Messages:
    171
    #15
  16. mikeespinmusic

    mikeespinmusic Rookie

    Joined:
    Jan 30, 2013
    Messages:
    165
    I don't believe Federer's racquet is 68. Not when his string tension is like 48 mains, 44 crosses. He'd launch everything out the court. I reckon its about high 50's - low 60's. But thats just me.
     
    #16
  17. rpsbel

    rpsbel New User

    Joined:
    Jul 9, 2012
    Messages:
    37

    Some threads show that as 68 RDC. Below there is one post (I am not the author).


    This is my friend's 2009 Federer K90 (racket number 56) mentioned on page 8 of this thread (photos etc below). Finally got around to measuring the specs:-

    Weight: 367g (including everything and has 3g lead under the bumper at 12 o'clock)
    Balance: 32.2cm
    Swingweight: 350



    And are these yours knots RJYU? LOL





    Quote:


    Originally Posted by RJYU View Post

    Yup. Those are my knots. Or, as Nate calls them, "Those beehive looking pieces of sh*t."


    The specs are very similar to those of a Federer K90 as measured by Art Art at Roland Garros which are below. He checked that racket, which had no lead under the bumper by the way.
    RDC: 68
    Weight: 367gr
    Balance point: 31.8cm from the but cap
    Wilson Gut 1.25mm/AluPower 1.25mm
    Wilson overgrip.

    If you can imagine some lead was moved from somewhere under the grip in Art Art's, to under the bumper in my friend's racket, that would explain the difference in the balance. I also think there must be a way to do this without changing the swingweight, but it depends where the lead was under the grip in Art Art's racket, and we will never know that unfortunately.

    Also the above is the only time I've seen one of Federer's racket tested for RDC, interesting to see it is 68. It is really a pity Art Art wasn't able to get the swingweight checked for that racket, but at least both of these have been checked for lead under the bumper. Fabfed has been brilliant showing all his rackets, but understandably doesn't want to check under the bumper for lead. I looked under the bumper on my friends racket, and it was not easy to do without damaging the bumper!
    __________________
    :)


    --------------------------------------------------------------------------------
    Last edited by jimbo333 : 04-15-2013 at 01:11 AM.
     
    #17

Share This Page